Milk strainer



J. FRIBERG MILK STRAINER April 2 2, 1930.

Filed June 27, 1929 70677 2 *ra'e @48h-w.; V.

Patented Apr. 22, 1936 *UNITED* STATES Jom lamme, or wns'rnono, mssacinism'rs MILK STBAINEB Animation v:um :une a?, v191:9. serial no. 374,162.

accidental displacement, while at the same time they may be readily removed for cleaning. l

The invention further relates to varrangements and combinations of parts which will be hereinafter described and more particularly pointed out inA the appended claims.

A preferred form of the invention is shown in the drawings in which Fig. 1 is a sectional side elevation of my improved strainer Fig. 2 is a perspective view of the lower screen cap; A Fig. 3 is a detail sectional elevation, taken along the line 3 3 in Fig.' 1;

Fig. 4 is an enlarged detail sectional elevation of certain parts of the lower screen and' 3 Cap;

Fig. 5 is an enlarged sectional elevation of a clamping device for the upper screen, and

Fig. 6 is a side elevation `of the clamping device, looking in the direction of the arrow 6 in Fi 5. 1

Re erring to the drawings, my improved strainer comprises an outer casing 10 having an enlarged open upper end portion 12, and successively contracted downwardly to provide an internal iange or shoulder 14 to support the upper screen, a second internal flange -or shoulder 16 to support the lower screen and filter, and a contracted cylindrical sleeve portion 18 adapted to be inserted in the mouth or top of a milk can C.

The lower screen preferably comprises layers 20 and 21 of a suitable screen material, commonly a fine wire mesh. A layer 22 of felt, fabric or other suitable filtering material, is disposed between the two screen layers An upper screen 30 is formed from wire 20 and 21. This combined filter and screen I 1s supported upon the internal flange or v shoulder 16 of the'casing 10 previously described.-

. An inverted conical cap 24 is rovided with an internal bottom'flange 25 ig. 4) which rests on the edge portion of the upper screen member 21 and holds the combined screen and lter in position. The cap 24 is closed in its top portion and is provided with slots or other suitable openings 26 in its side walls, through which the milk or other liquid is guided to the upper side of the combined screen and filter 20, 21 and 22.

meshor other suitable perforated material and is provided with an upstanding edge or iange 32, adapted. to lit closely on the outside of a short sleeve 33, depending from'a covering member 34 having an edge portion adapted to be supported on the flange or shoulder 14 previously described.

Semi-circular springs 38 'are formed from fiat resilient metal strips and are preferably secured to the upstanding edge portion 32 of the screen 30. The inturned lower ends o f the springs 38 rest on theclosed top of the cap 24 and firmly retain. the cap and the lower screen and filter inoperative position.

The extreme upper edge portion of the covering member 34 is contracted inwardly, asA indicated at 40, and a stud 41 may be provided at one side of the casing 10 to prevent upward movement of the covering member. At the opposite side of the casing, a spring hook 42 is secured to the contracted portion 40 (Fig. 5) and extends outwardly beyond the portion 12 of the casing 10.

A hand lever 44 is pivoted at 45 on the portion 12 and is provided with an open link 46 adapted to be placed over the end of the spring hook 42. When the lever 44 is then depressed to the position shown in Fig. 1, the covering member 34 is firmly secured in posi- 95,

- tion.

By releasing the lever 44, the covering member may be readily removed and the springs 38 will be removed therewith, thus leaving the cap 24 free for removal, so that 100 the lower screen and filter may be taken out and cleaned.

It will thus appear that I have provided a strainer in which all of the parts are secured in position by a single locking lever, and in which the release of this one lever permits immediate removal of all of the inner parts of the strainer.. y

Having thus described my invention and the advantages thereof, l do not Wish to be limited to the details herein disclosed, otherwise than as set fort-h in the claims, but what I claim is l. A milk strainer comprising an outer easing having upper and lower internal shoulders, a combined screen and filter supported on said'lower shoulder, an inverted ca for said screenrand filter having an imper orate top and o enings in its side walls'for the admission oi liquid thereto, an upper screen, a`

covering member on which said upper screen is mounted, said covering member being supported on said upper shoulder of said outer casing, means to hold said covering member in position, and means supported b said upper screen and covering member e ective to hold said inverted cap and lower screen and filter in position. s

2. A milk strainer comprising an outer casing having upper and lower internal shoulders, a combined screen and filter supported on said lower shoulder, an inverted cap for said screen and filter having openings 1n its side walls for the admission of liquid thereto, an upper screen, a covering member on which said up-per screen is mounted, said covering member being supported 0n said upper shoulder of said outer casing, means to hold said covering member in position, and resilient members supported by said covering member and directly 'engaglng said inverted cap, thereby yieldingly holding said cap and lower screen and filter in operative position.

3. A mllk strainer comprising an outer caslng havlng upper and lower internal shoulders, a combined screen and filter supportedy on said lower shoulder, an inverted cap for said dscreen and filterv having openings in itsl side walls for the admission of liquid thereto, an'upper screen, a covering member on which said upper screen is mounted, said covering member being supported on said upper shoulder of said outer casing, means to hold said covering member in position, and a pair of semi-circular springs mounted on said upper screen and 'covering member, the incurved lower ends of said springs engaging the top of said inverted cap' and yieldingly holding said cap and lower screen and filter in operative position.

4. A milk strainer comprising an outer casing having upper and lower internal shoulders, a combined screen and filter supported on said lower shoulder, an inverted cap for said screen and filter having openings 1n its side walls for the admission of liquid thereto an upper screen, a covering member on which said upper screen is mounted, said covering member being supported on said u per shoulder of said outer casing, means to old said covering member in position, said means comprising a resilient hook projecting outward from said covering member, a locking lever pivotally mounted on said outer casing, and a link pivoted on said lever and adapted to engage said hook and tension said hook by downward movement of said lever, and means supported by said upper screen and covering member effective to hold said inverted cap and lower screen and filter in position.

In testimonywhereof I have hereuntoy affixed my signature.

JOHN FRIBERG. 

